Feed-regulator for mixers.



H. S. SCOTT.

FEED REGULATOR FOB. MIXERS.

APPLICATION FILED MAR. 2a. 1913.

Patented Jan. 12, 1915.

2 sun-134mm 1.

INVEN TOR THE NORRIS PETERS CO). PHOm-LITHQ. WASHINGTON. D.

H. S. SCOTT.

FEED REGULATOR FOR MIXERS.

APPLICATION FILED mmzs. 191a.

Patented Jan. 12,1915.

2 SHEETS-SHEET 2.

" llllllu I7TTE$T INVENTOR THE NORRIS PETERS CQ, PHOTOVLITHQ.WASHING/ON, D. C.

UNITED STATES PATENT @FFTQE.

HORATIO S. SCOTT, OF ASHLAND, OHIO.

FEED-REGULATOR FOR MIXERS.

Application filed March 28, 1913.

To all whom it may concern.

Be it known that I, HoRATIo S. SCOTT, citizen of the United States,residing at Ashland, in the county of Ashland and State of Ohio, haveinvented certain new and useful Improvements in F eed-Regulators forMixers, of which the following is a specification.

This invention relates to improvements in mixers, and the improvementcomprises a feed regulator for a concrete mixer, substantially as hereinshown and described and more particularly pointed out in the claims.

The object of the invention is to provide an endless open carrieradapted to traverse through a hopper and cross transversely over theopen top of a receptacle to a drive member, the carrier returningbeneath the receptacle after dropping and distributing its load throughthe carrier itself directly into the receptacle. A cross feed of thiskind over the receptacle places the material always in plain sight andall the material brought forward is shaken loose and deposited withoutloss, and by placing the hopper and carrier at right angles to thereceptacle with the receptacle within the circle described by thecarrier, a very compact and stable machine is obtained. This arrangementalso enables the hopper and carrier to be placed low and near the mixingmecha nism and the receptacle is not cut away or its depth decreased inany way. F urthermore, no clogging of the carrier occurs, and separatematerials can be fed accurately in definite fixed proportions and in aneven, continuous unbroken stream. The hopper is also designed to have anadjustable stroke-off device to cooperate with the carrier in regulatingthe amount of material fed to the receptacle.

Figure 1 is a plan view of the machine. Fig. 2 is a cross section on aline immediately next to the outer hopper and showing the relation ofthe feed therefrom to the mixer, and F 3 is a cross section on the otherside of the said hopper and next to the cement hopper. Fig. 4 is an endview and cross section of the double hopper and its stroke-off device,and Fig. 5 is a sectional view of one stroke-0E device.

As thus shown the machine is mounted upon a suitable four wheel truckhaving a main frame F and adapted to be moved from place to place, andcarries an engine E at one end to supply the necessary operatingSpecification of Letters Patent.

Patented Jan. 12, 1915. Serial No. 757,377.

power through suitable shaft and gear connections. Power is transmittedby means of SZLICl gears G particularly to the opposite outside shaft 8from which the carriers 0 and 0 respectively, are alike operated andwhich operate in conjunction with the sand and gravel or crushed stonehopper h and the cement hopper h, respectively.

Referring first to the hopper it it will be observed that the saidhopper in fact is an entirely outside member as to the body and mainportion of the machine-and is removably supported upon a bottom f of itsown which is pivoted at 4 to be tilted over upon the top of the machinewhen such change of location becomes necessary, and is otherwisesupported upon legs 5 having integral segments 6 at their edge adaptedto adjust the said legs within limits to various positions and thus takeup the slack in the carrier 2, the roller or rollers 7 or theirequivalent being located on a shaft or on bearings at 8 in said legs andserving as the outer support for the endless carrier 0. Relatively thelegs or supports 5 are short and low as compared with the elevation ofthe mixing trough m, and this brings the hopper it at its deepest outerportion down to such a level as to render it of easy access for fillingby shovel or otherwise, and the outside and separate location of thesaid hopper contributes very materially to these advantages. The hopperbottom 7 is supplemented at its upper end by a fixed trough shapedextension 7 rigid on the main frame and to which bottom 7 is hinged at 4as above described,

and said extension discharges directly into the head of the mixer overthe side wall thereof and at one side. A sprocket or driv ing wheel ordrum 9 on shaft 8 supports the said carrier 0 outside the mixer at itsright, Fig. 2, and substantially on a plane with the top thereof, sothat the carrier passes idly about the mixer from its point of dischargeand returns beneath the same to the hopper it, thus crossing entirelyover the mixer and down beneath the bottom thereof where it is free totravel back to the hopper. The said carrier 0 has side links 11 andcross strips 12 afiixed thereto which serve to convey the material fedinto hopper it forward and upward into the mixer and of course thebottom of said hopper and its extension f is closed against leakage andthe speed of travel of the carrier will mainly determine the amount ofmaterial conveyed thereby,

assuming that the hopper is kept supplied with the raw stock and a gateor like control is used. As to this, it is to be observed that the saidhopper is divided into tWo compartments by a wall 14 and one is used tofeed the sand and the other the crushed stone or gravel, while thehopper it supplies the cement, as above indicated. An endless carrierserves for this hopper and passes over and around the mixing trough, asdoes carrier 0, and suitable drum or equivalent rollers 15 support thesaid carrier 0 at one end and sprocket 16 on shaft 8 on the other Fig.3.

Suitable gates or shut-oil's are employed in and with each hopper tocontrol the feed therefrom by the carriers and said gates, g and 9, havestroke-offs n and a hinged on the lower edges thereof and dominated bysprings 0 and 0 supported on said doors and through ears on the saidstroke-offs. Said doors have side wings to slidable up and down upon theside plates t rigid with the front of the hopper and serving as guidesfor said Wings on pins and slots in said parts. The screws 8 and s serveto raise and lower said doors and the pressure upon the stroke-offs isapplied by the springs 0 and 0', respectively, on rods r and 1"respectively, connected with said doors and stroke-offs.

One of the great advantages of the present construction of mixer overothers hitherto in use is that it provides a sight feed for all thematerial that enters the mixer, which enables the operator to see at alltimes just how the ingredients are coming and that the requisiteproportions are being maintained. Once the material is properly fed tothe mixer the preliminary work is done and the mixer takes care of therest The strokeofls shown afford accurate measurement of the materialaccording as they may be set for work and refined adjustments thereofare possible by the means shown. Usually I employ a scale with a pointerto fix the feed at a certain point, according to the condition of thematerial.

Vhat I claim is:

1. In a machine as described, a receptacle, a drive-shaft and wheelthereon at one side of said receptacle, a hopper transversely arrangedat the other side of said receptacle opposite said wheel, a bottom forsaid hopper, a roller at the other end of said recep- Ocpies of thispatent may be obtained for five cents each, by addressing the taclebelow said bottom, and an endless open carrier extending through saidhopper and across the top of said bottom and around said wheel andtransversely beneath the bottom of said receptacle to said roller.

2. In a machine as described, a receptacle, a drive wheel at one side ofsaid receptacle, a hopper opposite said wheel at the other side of saidreceptacle having an inclined bottom extending to the side and top ofsaid receptacle, a support for the outer end of said hopper, an idlerwheel mounted on said support, and an endless carrier comprising linksand cross pieces stretched between and around said wheels through saidhopper and transversely across the top of and back heneath the bottom ofsaid receptacle.

3. In a machine as described, a receptacle, a sprocket wheel supportedat one side of said receptacle, a divided hopper supported transverselyat one side of said receptacle opposite said wheel, an inclined bottomfor said hopper extending to the side and top of said receptacle, adivided endless carrier extending through said hopper and transverselyacross said receptacle and around said sprocket wheel and back beneaththe bottom of said receptacle, an idler wheel for said carrier supportedbeneath said hopper bottom at the outer end thereof, and separateadjustable stroke-0E devices at the front end of said hopper above saiddivided carrier.

l. In a machine as described, a receptacle, a drive shaft and sprocketwheel at one side of said receptacle, a fixed trough-shaped ex-- tensiontransversely arranged on the other side of said receptacle opposite saidwheel, a hopper hinged to said extension, a pivoted support for theother end of said hopper, a carrier wheel mounted on said support, anendless open carrier stretched between said wheels and extending throughsaid hopper and trough-shaped extension and passing transversely overand returning beneath said receptacle, and a stroke-off device abovesaid carrier at the discharge end of said hopper.

In testimony whereof I aflix my signature in presence of two witnesses.

HORATIO S. SCOTT.

WVitnesses:

R. B. MosnR, F. G. MUSSUN.

Commissioner of Eatents.

Washington, D. C.

